Hi Biju, On Sun, Jan 23, 2022 at 4:20 PM Biju Das <biju.das.jz@xxxxxxxxxxxxxx> wrote: > > On Wed, Jan 12, 2022 at 05:46:04PM +0000, Biju Das wrote: > > > The RZ/G2L VSPD provides a single VSPD instance. it has the following > > > sub modules MAU, CTU, RPF, DPR, LUT, BRS, WPF and LIF. > > > > > > It does not have version register, so added a new compatible string to > > > match to get the version value. Also the reset is shared with DU > > > module. > > > > Does it really lack the version register, or is it just not documented ? > > It hasn't been documented on all R-Car variants, but has consistently been > > present. > > No, it is not present on RZ/G2L. the read value of this register is 0x0. Just to be sure: you did check that while the module clock is enabled and the module reset is deasserted? Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds